docs: def set_default_shutit_pexpect_session_expect(self, expect=None):
  		"""Sets the default pexpect string (usually a prompt).
  		Defaults to the configured root prompt if no
  		argument is passed.
  
  		@param expect: String to expect in the output
  		@type expect: string
  		"""
  		if expect is None:
  			self.current_shutit_pexpect_session.default_expect = self.expect_prompts['ORIGIN_ENV']
  		else:
  			self.current_shutit_pexpect_session.default_expect = expect
  		return True